Support brace for a mobile sign



FIG. 1 is a top plan view showing my new design;

FIG. 2 is a leading side elevational view, the other sides beingidentical;

FIG. 3 is a side elevational view with my design being in invertedposition, the other like sides being identical;

FIG. 4 is a bottom plan view of my new design; and,

FIG. 5 is a perspective view as seen from the front, top and left of mynew design.

The ornamental design for a support brace for a mobile sign, as shownand described.